Airtac MIJ Adjustable Cylinder MIJ25X70-40S
The AirTAC MIJ Adjustable Cylinder MIJ25X70-40S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø25mm bore and 70mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface fits standard ISO 6432 mini-cylinder mounting interfaces.
- BoreØ25 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MIJ Adjustable Cylinder MIJ25X70-40S
Dial in a precise forward end position on-site with the AirTAC MIJ25X70-40S, a round-body stainless-steel mini cylinder featuring a 40mm adjustable extend window. An external stop screw lets you trim the 70mm forward stroke down to 30mm without changing the unit, while retract remains full length. Built with a stainless barrel and rod, it handles mild washdown environments and conforms to the ISO 6432 mounting interface for standard mini brackets.
The 1/8" port and M10x1.25 male rod thread provide robust connectivity. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG position sensing.
Airtac MIJ Adjustable Cylinder MIJ25X70-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ25X70-40S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MIJ Adjustable Cylinder MIJ25X70-40S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ25X70-40S Is Used
Staged Feed Diverter
Pushes packages at 245 N while the 40mm stroke adjuster lets operators fine-tune the diverter reach for different box sizes on the fly.
Variable Depth Sealing
Sets the exact forward crush depth for carton flaps; the 12.5 kg lift capacity handles heavy lids, and the stop screw prevents over-travel.
Tolerance Take-Up Press
Compensates for material thickness variance in a light assembly press, using the external screw to dial in the exact 30-70mm end position.
Is the Airtac MIJ Adjustable Cylinder MIJ25X70-40S the Right Cylinder?
When sizing this 25mm bore, dropping down to a 20mm MIJ reduces the 0.5 MPa push force to 157 N, while stepping up to a 32mm bore increases it to 402 N. The 40mm adjuster is ideal for taking up mechanical tolerances during setup or covering multiple stop positions with a single part number. The stop screw sets the extend endpoint only; it does not function as a mid-stroke lock, so an external rod lock or pilot check valve is required to hold a load on air loss.
Mounting options include LB foot, FA flange, and TC trunnion, but the SDB pivot block is not available on this adjustable variant. Back covers CA, U, R, and CM are offered. Fixed TPU bumper pads decelerate the stroke ends across the 30-800 mm/s speed range.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MIJ Adjustable Cylinder MIJ25X70-40S FAQ
The theoretical maximum force is 50 kgf at 1.0 MPa. This 25mm bore cylinder uses a 1/8" port.
The external stop screw shortens the extend stroke by up to 40mm, giving a usable forward range of 30-70mm; retract remains full stroke. The -S suffix means a piston magnet is built-in for CMSG, DMSG, or EMSG sensors. The stainless build resists mild corrosion.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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